New York City Mayor Eric Adams said on Monday there was an "active shooter" investigation underway in central Manhattan, while the FBI added it was also providing support at what it called an active crime scene.

At least one police officer and at least one civilian has been shot at the incident inside of a building on Park Avenue in New York City as a result of an active shooter incident, two senior NYC officials say.

Shane Tamura was identified as the Manhattan active shooter suspect. That's according to the New York Post, which cited law enforcement sources. Authorities have not yet formally named the gunman, who was pictured in a widely published photo toting a rifle and calmly walking down the sidewalk